At the moment a very theoretical avenue, it could nonetheless become real in a few years… or more probably decades. The universe is large, with a wealth of resources and energy… if a bit hostile to life of our kind. The biggest hurdle is to overcome the economic and other costs to enter space.

The Lifeboat Foundation is working on Space Habitats, self-sustaining space colonies built to ensure humanity could survive disasters… and perhaps regain some privacy. There are some more useful resources there.